STRETCHED POROUS POLYTETRAFLUOROETHYLENE FILM LAMINATED SHEET AND GASKET COMPOSED OF THE SHEET

摘要

The laminated sheet of this invention is a sheet including expanded porous polytetrafluoroethylene films laminated by thermal compression bonding, wherein the sheet has a specific surface area of 9.0 m 2 /g or larger and a density of from 0.4 g/cm 3 to lower than 0.75 g/cm 3 , thereby making it possible to improve both the creep resistance and the adhesiveness between the films of the expanded porous PTFE film-laminated sheet.